As long as I live so long will I learn - Sri Ramakrishna

Mandar Patil

Name: Mandar Patil

Area of Research: General Relativity, Relativistic Astrophysics, Gravitational Waves, Cosmology

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Link to personal webpage:

Education and Employment:

Faculty (2017-Present): RKMVERI

Assistant Professor Adjunct and Postdoctoral Fellow (2016-2017): Institute of Mathematics of Polish Academy of Sciences, Warsaw, Poland.

Postdoctoral Scholar (2015-2016): Institute of Theoretical Physics, Rikkyo University, Tokyo, Japan

Postdoctoral Scholar (2013-2015): Inter University Center for Astronomy and Astrophysics, Pune, India

Ph. D. (2013): Tata Institute of Fundamental Research, Mumbai, India (Integrated MSc-PhD)

B.Sc. (Physics, First Class)(2005): Ramnarain Ruia College, Mumbai, India

Selected Publications

  • Curious case of gravitational lensing by binary black holes: a tale of two photon spheres, new relativistic images and caustics, Mandar Patil, Priti Mishra and D. Narasimha, Phys. Rev. D 95, 024026 (2017)

  • Infinite efficiency of collisional Penrose process: Can over-spinning Kerr geometry be the source of ultra-high-energy cosmic rays and neutrinos ? Mandar Patil, Tomohiro Harada, Ken-ichi Nakao, Pankaj S. Joshi and Masashi Kimura, Phys. Rev. D 93, 104015 (2016)

  • How small can an over-spinning body be in general relativity? Ken-ichi Nakao, Masashi Kimura, Tomohiro Harada, Mandar Patil, and Pankaj S. Joshi, Phys. Rev. D 90, 124079 (2014)

  • Can strong gravitational lensing distinguish naked singularities from black holes? Satyabrata Sahu, Mandar Patil, D. Narasimha, and Pankaj S. Joshi, Phys. Rev. D 86, 063010 (2012)

  • Kerr Naked Singularities as Particle Accelerator, Mandar Patil and Pankaj S. Joshi, Class. Quantum Grav. 28, 23501 (2011)

Complete list of publications available at

Research Interests

My field of research is General Relativity, Relativistic Astrophysics, Gravitational Waves and Cosmology. General relativity is a theory of gravity proposed by Einstein in 1915, which suggests that gravity is a manifestation of curvature of spacetime. Massive objects warp spacetime around it and smaller objects follow geodesics through the curved spacetime. General Relativity predicts a wide variety of interesting phenomenon such as Black Holes that are endowed with a surface called Event Horizon which is a one-way membrane absorbing all the incoming matter and radiation and not letting anything go out, Singularities that are associated with the divergence of the spacetime curvature indicating the breakdown of known physics, Gravitational Waves which are tiny ripples on the fabric of spacetime propagating at speed of light generated in the cataclysmic events such as black hole and neutron star mergers. General Relativity has emerged as an indispensable tool in our understanding of cosmos and nature.

I am interested in, have worked on, and continue to explore a wide variety of topics related to General Relativity and Gravitational Physics, such as high-energy collisions and associated phenomenon around black holes and singularities, violation of cosmic censorship conjecture and its observational consequences, gravitational collapse leading to black holes and singularities, gravitational lensing by black holes, singularities and multi-black hole systems, structure of accretion disks around black holes and singularities, dynamics of thin shells in general relativity, precession of a test gyroscope as a probe of curved spacetimes, solving constraint Einstein equations, detection of gravitational waves from spinning neutron stars and black hole quasi-normal modes, etc.